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The Single UNIX &reg; Specification, Version 2<br>
Copyright &copy; 1997 The Open Group

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<h4><a name = "tag_000_007_390">&nbsp;</a>NAME</h4><blockquote>
localtime, localtime_r - convert a time value to a broken-down
local time
</blockquote><h4><a name = "tag_000_007_391">&nbsp;</a>SYNOPSIS</h4><blockquote>
<pre><code>

#include &lt;<a href="time.h.html">time.h</a>&gt;

struct tm *localtime(const time_t *<i>timer</i>);
struct tm *localtime_r(const time_t *<i>clock</i>, struct tm *<i>result</i>);
</code>
</pre>
</blockquote><h4><a name = "tag_000_007_392">&nbsp;</a>DESCRIPTION</h4><blockquote>
The
<i>localtime()</i>
function converts the time in seconds since the Epoch pointed to by
<i>timer</i>
into a broken-down time, expressed as a local time.  The function corrects for
the timezone and any seasonal time adjustments.  Local timezone information is
used as though
<i>localtime()</i>
calls
<i><a href="tzset.html">tzset()</a></i>.
<p>
The
<i>localtime()</i>
interface need not be reentrant.
<p>
The
<i>localtime_r()</i>
function converts the calendar time pointed to
by <i>clock</i> into a broken-down time stored in the structure to
which <i>result</i> points.
The
<i>localtime_r()</i>
function also returns a pointer to that same structure.
<p>
Unlike
<i>localtime()</i>,
the reentrant version is not required to set
<i>tzname</i>.
</blockquote><h4><a name = "tag_000_007_393">&nbsp;</a>RETURN VALUE</h4><blockquote>
The
<i>localtime()</i>
function returns a pointer to the broken-down time structure.
<p>
Upon successful completion,
<i>localtime_r()</i>
returns a pointer to the structure pointed to by the argument <i>result</i>.
</blockquote><h4><a name = "tag_000_007_394">&nbsp;</a>ERRORS</h4><blockquote>
No errors are defined.
</blockquote><h4><a name = "tag_000_007_395">&nbsp;</a>EXAMPLES</h4><blockquote>
None.
</blockquote><h4><a name = "tag_000_007_396">&nbsp;</a>APPLICATION USAGE</h4><blockquote>
The
<i><a href="asctime.html">asctime()</a></i>,
<i><a href="ctime.html">ctime()</a></i>,
<i><a href="getdate.html">getdate()</a></i>,
<i><a href="gettimeofday.html">gettimeofday()</a></i>,
<i><a href="gmtime.html">gmtime()</a></i>
and
<i>localtime()</i>
functions return values in one of two static objects: a
broken-down time structure and an array of
<b>char</b>.
Execution of any of the functions may overwrite the information
returned in either of these objects by any of the other
functions.
</blockquote><h4><a name = "tag_000_007_397">&nbsp;</a>FUTURE DIRECTIONS</h4><blockquote>
None.
</blockquote><h4><a name = "tag_000_007_398">&nbsp;</a>SEE ALSO</h4><blockquote>
<i><a href="asctime.html">asctime()</a></i>,
<i><a href="clock.html">clock()</a></i>,
<i><a href="ctime.html">ctime()</a></i>,
<i><a href="difftime.html">difftime()</a></i>,
<i><a href="getdate.html">getdate()</a></i>,
<i><a href="gettimeofday.html">gettimeofday()</a></i>,
<i><a href="gmtime.html">gmtime()</a></i>,
<i><a href="mktime.html">mktime()</a></i>,
<i><a href="strftime.html">strftime()</a></i>,
<i><a href="strptime.html">strptime()</a></i>,
<i><a href="time.html">time()</a></i>,
<i><a href="utime.html">utime()</a></i>,
<i><a href="time.h.html">&lt;time.h&gt;</a></i>.
</blockquote><h4>DERIVATION</h4><blockquote>
<i>localtime()</i> derived from Issue 1 of the SVID.
<P>
<i>localtime_r()</i> derived from the POSIX Threads Extension (1003.1c-1995).
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UNIX &reg; is a registered Trademark of The Open Group.<br>
Copyright &copy; 1997 The Open Group
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